Lisa Pathfinder Exceeds Expectations | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

Airborne Unlimited -- Most Recent Daily Episodes

Episode Date

Airborne-Monday

Airborne-Tuesday

Airborne-Wednesday Airborne-Thursday

Airborne-Friday

Airborne On YouTube

Airborne-Unlimited-07.07.25

Airborne-NextGen-07.08.25

AirborneUnlimited-07.09.25

Airborne-FlightTraining-07.10.25

AirborneUnlimited-07.11.25

Tue, Jun 14, 2016

Lisa Pathfinder Exceeds Expectations

ESA: Mission Demonstrates Need To Build Gravitational Wave Observatory

ESA’s LISA Pathfinder mission has demonstrated the technology needed to build a space-based gravitational wave observatory, according to the space agency.

Results from only two months of science operations show that the two cubes at the heart of the spacecraft are falling freely through space under the influence of gravity alone, unperturbed by other external forces, to a precision more than five times better than originally required.

In a paper published Tuesday in Physical Review Letters, the LISA Pathfinder team show that the test masses are almost motionless with respect to each other, with a relative acceleration lower than 1 part in ten millionths of a billionth of Earth’s gravity.

The demonstration of the mission’s key technologies opens the door to the development of a large space observatory capable of detecting gravitational waves emanating from a wide range of exotic objects in the Universe.

Hypothesized by Albert Einstein a century ago, gravitational waves are oscillations in the fabric of spacetime, moving at the speed of light and caused by the acceleration of massive objects. They can be generated, for example, by supernovas, neutron star binaries spiralling around each other, and pairs of merging black holes.

Even from these powerful objects, however, the fluctuations in spacetime are tiny by the time they arrive at Earth – smaller than 1 part in 100 billion billion. Sophisticated technologies are needed to register such minuscule changes, and gravitational waves were directly detected for the first time only in September 2015 by the ground-based Laser Interferometer Gravitational-Wave Observatory (LIGO).

This experiment saw the characteristic signal of two black holes, each with some 30 times the mass of the Sun, spiralling towards one another in the final 0.3 seconds before they coalesced to form a single, more massive object.

The signals seen by LIGO have a frequency of around 100 Hz, but gravitational waves span a much broader spectrum. In particular, lower-frequency oscillations are produced by even more exotic events such as the mergers of supermassive black holes. With masses of millions to billions of times that of the Sun, these giant black holes sit at the centers of massive galaxies. When two galaxies collide, these black holes eventually coalesce, releasing vast amounts of energy in the form of gravitational waves throughout the merger process, and peaking in the last few minutes.

(Image provided with ESA news release)

FMI: www.esa.int

Advertisement

More News

Airborne 07.11.25: New FAA Boss, New NASA Boss (Kinda), WB57s Over TX

Also: ANOTHER Illegal Drone, KidVenture Educational Activities, Record Launches, TSA v Shoes The Senate confirmed Bryan Bedford to become the next Administrator of the FAA, in a ne>[...]

Airborne-Flight Training 07.10.25: ATC School, Air Race Classic, Samson School

Also: Sully v Bedford, Embraer Scholarships, NORAD Intercepts 11, GAMA Thankful Middle Georgia State University will be joining the Federal Aviation Administration’s fight ag>[...]

Airborne Affordable Flyers 07.03.25: Sonex HW, BlackShape Gabriel, PRA Fly-In 25

Also: DarkAero Update, Electric Aircraft Symposium, Updated Instructor Guide, OSH Homebuilts Celebrate The long-awaited Sonex High Wing prototype has flown... the Sonex gang tells >[...]

Airborne-Flight Training 07.10.25: ATC School, Air Race Classic, Samson School

Also: Sully v Bedford, Embraer Scholarships, NORAD Intercepts 11, GAMA Thankful Middle Georgia State University will be joining the Federal Aviation Administration’s fight ag>[...]

Rick Kenin New Board Chair of VAI

30-Year USCG Veteran Aviator Focusing On Member Benefits The Vertical Aviation International Board of Directors announced its new leadership officers in April, and all began their >[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2025 Web Development & Design by Pauli Systems, LC